/Engine/Source/Runtime/Engine/Public/SaveGameSystem.h
Indicates that an async savegame operation has completed. SlotName, PlatformUserId, bool=success. Should always be called from the gamethread.
typedef [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< void(const [FString](API\Runtime\Core\Containers\FString) &, [FPlatformUserId](API\Runtime\Core\Misc\FPlatformUserId), bool)> FSaveGameAsyncOpCompleteCallback